30872808 has 96 divisors (see below), whose sum is σ = 88583040. Its totient is φ = 9694080.

The previous prime is 30872797. The next prime is 30872819. The reversal of 30872808 is 80827803.

It is an interprime number because it is at equal distance from previous prime (30872797) and next prime (30872819).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170478 + ... + 170658.

It is an arithmetic number, because the mean of its divisors is an integer number (922740).

Almost surely, 2^30872808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30872808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44291520).

30872808 is an abundant number, since it is smaller than the sum of its proper divisors (57710232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30872808 is a wasteful number, since it uses less digits than its factorization.

30872808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 30872808 is about 5556.3304437371. The cubic root of 30872808 is about 313.7078435236.

The spelling of 30872808 in words is "thirty million, eight hundred seventy-two thousand, eight hundred eight".